I made some miniature quilts from scraps from my last project. The scraps that remained from those 2 quilts will just get used up in a junk blanket for the car using strip piecing methods.
For many years, I just cut up the scraps into pre-determined sizes: 1.5, 2, 2.5, 3, 3.5 plus 1.5, 2 and 2.5 inch strips. After I complete the current quilt, I will no longer cut squares smaller than 2.5, although I will probably continue to cut strips since various family members have requested junk blankets.
Here is a link to the style of junk quilt that I make. This one is actually pretty. Mine are ugly so people use them. The second quilt is quite pretty. For cars, you want ugly blankets because people DO steal quilts and you wouldn't want your window broken out.
Junk quilt
Scrap quilt